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avcodec/mpeg4videoenc: Check extradata malloc()

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Fixes: Null pointer dereference
Fixes: any mpeg4 testcase which fails the malloc at that exact spot

Found-by: Rafael Dutra <rafael.dutra@cispa.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 33a1687bf6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-03-19 16:30:08 +01:00
parent b2d4f33fd4
commit 77cab29a28
1 changed files with 2 additions and 0 deletions
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libavcodec/mpeg4videoenc.c
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@ -1334,6 +1334,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
if (s->avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
s->avctx->extradata = av_malloc(1024);
if (!s->avctx->extradata)
return AVERROR(ENOMEM);
init_put_bits(&s->pb, s->avctx->extradata, 1024);
if (!(s->workaround_bugs & FF_BUG_MS))